CN108836373A - The Tomography device for having focus shift compensation function - Google Patents
The Tomography device for having focus shift compensation function Download PDFInfo
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- CN108836373A CN108836373A CN201810458949.4A CN201810458949A CN108836373A CN 108836373 A CN108836373 A CN 108836373A CN 201810458949 A CN201810458949 A CN 201810458949A CN 108836373 A CN108836373 A CN 108836373A
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- 238000003325 tomography Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 claims abstract description 31
- 230000008569 process Effects 0.000 claims abstract description 26
- 238000003384 imaging method Methods 0.000 claims description 11
- 230000007246 mechanism Effects 0.000 claims description 9
- 230000001133 acceleration Effects 0.000 claims description 3
- 238000007540 photo-reduction reaction Methods 0.000 claims description 2
- 230000009885 systemic effect Effects 0.000 abstract description 7
- 210000005075 mammary gland Anatomy 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 210000000481 breast Anatomy 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 208000017983 photosensitivity disease Diseases 0.000 description 2
- 231100000434 photosensitization Toxicity 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 210000000746 body region Anatomy 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 210000000038 chest Anatomy 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000010827 pathological analysis Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/44—Constructional features of apparatus for radiation diagnosis
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- High Energy & Nuclear Physics (AREA)
- Heart & Thoracic Surgery (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Apparatus For Radiation Diagnosis (AREA)
Abstract
The present invention relates to a kind of Tomography devices for having focus shift compensation function, including bulb, for emitting x-ray；Bulb support arm is used to support the bulb and drives the bulb mobile；Offset assembly connects the bulb, for making the bulb that positional shift occur；Control device is moved for controlling the offset assembly and further controlling the bulb.This patent control device when bulb starts exposure, which controls the offset assembly, moves the bulb with the direction opposite with the bulb support arm direction of motion, make the x-ray focus in exposure process with to be exposed object opposing stationary or substantially opposing stationary.In this way, being just avoided that in exposure process, bulb follows bulb support arm to move caused focussing movement trajectory problem together, on the basis of guaranteeing that Image Acquisition is fireballing, moreover it is possible to realize and keep focus opposing stationary, to improve systemic resolution.
Description
Technical field
The present invention relates to video machine technology field, in particular to a kind of Tomography for having focus shift compensation function
Device.
Background technique
X-ray is applied to medical diagnosis, main to make according to the penetration of X-ray, differential absorption, photosensitization and fluorescence
With.When passing through human body due to X-ray, by different degrees of absorption, if the amount of x-ray of bone absorption is than the amount that muscle absorbs
It is more, then by the amount of x-ray after human body with regard to different, such Portable belt information of partes corporis humani's Density Distribution, in fluorescence
Caused fluorescence or the power of photosensitization just have bigger difference on screen or on photographic film, thus on fluorescent screen or take the photograph
It would indicate that the shade of different densities on shadow film (by development, fixing).According to the deep or light comparison of shade, in conjunction with clinical table
Existing, result of laboratory test and pathological diagnosis can determine whether human body a part is normal.
When carrying out two-dimensional imaging using x-ray, bulb position is fixed, it is only necessary to which carrying out single exposure can be completed once
Imaging.When using body layer compound imaging, for example, mammary gland body layer compound imaging, x-ray bulb shoots several mammary gland in different angle and throws
Then the backprojection reconstruction of these different angles with mathematical algorithm is again mammary gland internal structural information from level to level by shadow, usually every
The breast tissue that layer representative thickness is 1mm.
Laminated in image acquisition process in body, there are two types of modes for the x-ray bulb of movement：One is exposure when bulb stop
It only moves, bulb moves to first retainer, stops, and exposes, continues to move.This method purpose is desirable to x-ray focus and exposes again
In remain stationary, but in practical applications, bulb emergency stop from movement can generate shake, so focus is not complete in exposure
It is complete static.If really waiting focus is totally stationary to expose again, the waiting time for needing to grow very much, whole image is caused to acquire
Process time is too long.Another method is that bulb moves to first retainer exposure (bulb keeps movement in exposure process).It is this
Mode Image Acquisition quickly, but in exposure, equivalent X source not instead of focus itself, the focussing movement within the time for exposure
In other words " focus of elongation ", will lead to systemic resolution reduces (Fig. 1) for track.
Therefore, there is an urgent need for a kind of Tomography devices that can be eliminated focus when bulb exposes and elongate.
Summary of the invention
Based on this, it is necessary to provide a kind of Tomography dress that can be eliminated focus when bulb exposes and elongate due to displacement
It sets.
A purpose according to the present invention provides a kind of Tomography device for having focus shift compensation function, including：
Bulb, for emitting x-ray；
Bulb support arm is used to support the bulb and drives the bulb mobile；
Offset assembly connects the bulb, for making the bulb that positional shift occur；
Control device is moved for controlling the offset assembly and further controlling the bulb；The Tomography dress
It sets bulb support arm described in exposure process and keeps movement, the control device, which controls the offset assembly, when starting exposure makes institute
Bulb is stated to move with the direction opposite with the bulb support arm direction of motion, make the x-ray focus in exposure process with quilt
Object-exposing is opposing stationary or substantially opposing stationary.
The offset assembly is torsion component in one of the embodiments, connects the bulb, makes the bulb with institute
Stating bulb and bulb linking arm junction is the center of circle, is initial with the direction opposite with the bulb linking arm rotation direction
Rotation direction rotation, make the x-ray focus in exposure process with described to be exposed object opposing stationary or substantially relatively quiet
Only.
The bulb is rotated in one of the embodiments, with predetermined angular speed.
The bulb velocity of rotation and the bulb support arm velocity of rotation are identical or basic in one of the embodiments,
It is identical.
The control device control bulb stops counter motion simultaneously after end exposure in one of the embodiments,
Returning movement is carried out, the bulb is restored to before exposure next time starts and is aligned with the initial phase of the bulb support arm
It sets.
The offset assembly includes mobile platform and mobile control mechanism in one of the embodiments,；
The mobile platform is set on the bulb linking arm, for carrying the bulb；
The mobile control mechanism connects the bulb, for moving the bulb on the mobile platform；
The control device, which controls the mobile control mechanism, moves the bulb on a mobile platform, makes the x-ray
Focus in exposure process with described to be exposed object opposing stationary or substantially opposing stationary.
The bulb moves at a predetermined velocity or starts to move with predetermined acceleration in one of the embodiments,；And/
Or
The mobile platform is fixedly connected or is detachably connected with the bulb linking arm.
The control device controls the bulb and stop motion and continues after end exposure in one of the embodiments,
With direction returning movement identical with the bulb support arm rotation direction, restore the bulb before exposure next time starts
To the initial relative position with the bulb support arm.
The initial relative position refers to Tomography device exposure when institute for the first time in one of the embodiments,
State the relative position of bulb Yu the bulb support arm.
The Tomography device is that mammary X-ray body is laminated at imaging device or other bodies in one of the embodiments,
Body region x-ray body is laminated at imaging device.
The above-mentioned Tomography device for having focus compensation function, including bulb, for emitting x-ray；Bulb support arm is used
In the support bulb and drive the bulb mobile；Offset assembly connects the bulb, for making the bulb that position occur
Offset；Control device is moved for controlling the offset assembly and further controlling the bulb.It is exposed in Tomography device
The bulb support arm keeps movement in the process, and quickly, but in exposure, equivalent X source is not burnt to this mode Image Acquisition
Point itself, but the motion profile of focus, cause systemic resolution to reduce.And this patent control when bulb starts exposure
Device, which controls the offset assembly, moves the bulb with the direction opposite with the bulb support arm direction of motion, makes described
X-ray focus in exposure process with to be exposed object opposing stationary or substantially opposing stationary.In this way, being just avoided that exposed
Focussing movement trajectory problem caused by bulb follows bulb support arm to move together in journey is guaranteeing the fireballing base of Image Acquisition
On plinth, moreover it is possible to realize and keep focus opposing stationary, to improve systemic resolution.
Detailed description of the invention
Fig. 1 is the schematic diagram of the equivalent X source of traditional breast X-ray machine exposure process；
Fig. 2 is the module map of the Tomography device for having focus compensation function of an embodiment of the present invention；
Fig. 3 is the side schematic view of the Tomography device for having focus compensation function of one embodiment of the invention；
Fig. 4 is the schematic top plan view of the Tomography device for having focus compensation function of embodiment illustrated in fig. 3；
Fig. 5 is the Tomography device side schematic view for having focus compensation function of another embodiment of the present invention；
Fig. 6 is the schematic top plan view of the Tomography device for having focus compensation function of embodiment illustrated in fig. 5.
Specific embodiment
As previously mentioned, body it is laminated at image collection during, there are two types of modes for the x-ray bulb of movement：One is exposing
Light time bulb stop motion, bulb move to first retainer, stop, and exposure continues to move.This method purpose is desirable to x-ray
Focus is remain stationary in exposing again, but in practical applications, and bulb emergency stop from movement can generate shake, so in exposure
Focus is not totally stationary.If really waiting focus is totally stationary to expose again, the waiting time for needing to grow causes whole very much
A image acquisition process overlong time.Another method is that bulb moves to first retainer exposure, and (bulb is kept in exposure process
Movement).This mode Image Acquisition quickly, but in exposure, transport by equivalent X source not instead of focus, the focus elongated itself
Dynamic rail mark, will lead to systemic resolution reduces (Fig. 1).And this patent is when bulb starts exposure described in control device control
Offset assembly moves the bulb with the direction opposite with the bulb support arm direction of motion, is exposing the x-ray focus
In photoreduction process with to be exposed object opposing stationary or substantially opposing stationary.In this way, be just avoided that in exposure process bulb with
Focussing movement trajectory problem caused by being moved with bulb support arm, on the basis of guaranteeing that Image Acquisition is fireballing, moreover it is possible to
It realizes and keeps focus opposing stationary, to improve systemic resolution.
The present invention is described more fully with below with reference to attached drawing, shows exemplary embodiment party of the invention in the accompanying drawings
Formula.As those skilled in the art will appreciate that, described embodiment can be modified in a variety of ways, own
Modification is without departure from the spirit or scope of the present invention.
1-6 elaborates technical solution of the present invention with reference to the accompanying drawing.
Fig. 1 is the schematic diagram of the equivalent X source of traditional breast X-ray machine exposure process；
Fig. 2 is the module map of the Tomography device for having focus compensation function of an embodiment of the present invention；
Fig. 3 is the schematic front view of the Tomography device for having focus compensation function of one embodiment of the invention；
Fig. 4 is the schematic top plan view of the Tomography device for having focus compensation function of embodiment illustrated in fig. 3；
Fig. 5 is the Tomography device schematic front view for having focus compensation function of another embodiment of the present invention；
Fig. 6 is the side schematic view of the Tomography device for having focus compensation function of embodiment illustrated in fig. 5.
With reference to Fig. 2, a kind of Tomography device 100 having focus compensation function, which is characterized in that including：Bulb
120, bulb support arm 140, offset assembly 160 and control device 180.Wherein, bulb 120, for emitting x-ray；Bulb branch
Brace 140 is used to support the bulb and drives the bulb mobile；Offset assembly 160 connects the bulb, for making
It states bulb and positional shift occurs；Control device 180 is moved for controlling the offset assembly and further controlling the bulb.
Bulb support arm described in the Tomography device exposure process keeps movement, starts control device control institute when exposure
Stating offset assembly moves the bulb with the direction opposite with the bulb support arm direction of motion, and the x-ray focus is made to exist
In exposure process with to be exposed object opposing stationary or substantially opposing stationary.
It is elongated in this way, being just avoided that in exposure process, bulb follows bulb support arm to move caused equivalent focus together
Problem (refers to Fig. 1), on the basis of guaranteeing that Image Acquisition is fireballing, moreover it is possible to realize and keep focus opposing stationary, to improve
Systemic resolution.
The effect of offset assembly 160 shown in Fig. 2 is that generating bulb 120 in exposure deviates, and changes original bulb
Opposing stationary situation between 120 and bulb support arm 140, thus keep the opposite object that is exposed of bulb 120 static, it is e.g. newborn
Gland or chest etc..It is said herein it is opposing stationary include static and close to static.It wherein, include two close to opposing stationary situation
Kind, one is caused by due to error etc. close to opposing stationary；Another situation is that offset assembly itself keeps bulb mobile
Make the limitation etc. of 120 movement speed of bulb to the position opposing stationary with object proximity is exposed, such as offset assembly 160.Example
Such as, the mobile bring focus that the movement of bulb 120 cannot be made to be completely counterbalanced by bulb support arm 140 is mobile, but at this time
It is mobile to substantially reduce focus.
About offset assembly 160, can be makes 120 translational motion of bulb or makes bulb 120 with the generation of the somewhere center of circle
Rotation.Therefore, the corresponding different structure of offset assembly 160.
With reference to attached drawing 3 and Fig. 4, offset assembly 160 is torsion component (not shown), connects the bulb, makes the bulb
Using the bulb and bulb linking arm junction as the center of circle, it is with the direction opposite with the bulb linking arm rotation direction
Initial rotation direction rotation (refer to Fig. 4), make the x-ray focus in exposure process with it is described be exposed object it is opposing stationary or
Person is substantially opposing stationary.Wherein, the bulb 120 can be rotated with predetermined angular speed.The opposite bulb support arm of the bulb 120
140 velocity of rotation can be identical or essentially identical with 140 velocity of rotation of bulb support arm.Also, complete a body
After the exposure of position, the control device controls the reversed fortune that the bulb stops above-mentioned (opposite bulb support arm) after end exposure
Return rotation is moved and carried out, is restored to the bulb 120 before exposure next time starts first with the bulb support arm 140
Beginning relative position.Wherein, the movement velocity of 120 return of bulb can be consistent with above-mentioned counter motion.
With reference to Fig. 5 and Fig. 6, the offset assembly 160 may include that mobile platform 162 and mobile control mechanism (are schemed not
Show).The mobile platform 162 is set on the bulb linking arm 140, for carrying the bulb 120；The mobile control
Mechanism connects the bulb 120, for moving the bulb 120 on the mobile platform 162.The mobile platform and institute
Bulb linking arm is stated to be fixedly connected or be detachably connected.The control device 180 control the mobile control mechanism make it is described
Bulb 120 moves on mobile platform 162, make the x-ray focus in exposure process with described to be exposed object opposing stationary
Or it is substantially opposing stationary.Wherein, the bulb is moved (opposite bulb support arm 140 is at the uniform velocity) at a predetermined velocity or is added with predetermined
Speed starts to move.Also, the control device 180 controls the bulb 120 and stops above-mentioned opposite bulb after end exposure
The direction of support arm 140 is moved and is continued with direction returning movement identical with 140 rotation direction of bulb support arm, and institute is made
It states bulb 120 and is restored to initial relative position with the bulb support arm 140 before exposure next time starts.Wherein, bulb
The speed of 120 returning movement can be consistent with above-mentioned counter motion speed, mode including movement (at the uniform velocity or acceleration) with
And corresponding speed.In various embodiments, the speed of 120 return of bulb can be relatively smaller.
Wherein, initial relative position refers to the opposite position when exposing first time between bulb 120 and bulb support arm 140
It sets.The bulb support arm 160 when exposing first time of Tomography device 100 does not start turning, therefore bulb 120 and bulb support
There is initial relative position between arm 140.When last time exposes, bulb 120 is still being moved with bulb support arm 140, still
Carry out bit shift compensation and revert action.After last time exposes, it can just slow down and stop.
The Tomography device 100 for having focus compensation function described above, can be adapted for this field it is conventional at
As device, for example, the Tomography device can be laminated at imaging device for mammary gland body layer compound imaging or other position bodies.
Also, the Tomography device that the present invention protects, which is applied not only to medical domains, can be also used for the inspection in the fields such as industry/safety
Survey imaging.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of Tomography device for having focus shift compensation function, which is characterized in that including：
Bulb, for emitting x-ray；
Bulb support arm is used to support the bulb and drives the bulb mobile；
Offset assembly connects the bulb, for making the bulb that positional shift occur；
Control device is moved for controlling the offset assembly and further controlling the bulb；The Tomography device exposes
Bulb support arm described in photoreduction process keeps movement, and the control device, which controls the offset assembly, when starting exposure makes the ball
The movement of the bulb support arm direction of motion is opposite described in Guan Yiyu direction, make the x-ray focus in exposure process be exposed
Object is opposing stationary or substantially opposing stationary.
2. the Tomography device according to claim 1 for having focus shift compensation function, which is characterized in that described inclined
Moving device is torsion component, connects the bulb, justifies the bulb with the bulb and bulb linking arm junction
The heart rotates by initial rotation direction of the direction opposite with the bulb linking arm rotation direction, is exposing the x-ray focus
In the process with described to be exposed object opposing stationary or substantially opposing stationary.
3. the Tomography device according to claim 2 for having focus shift compensation function, which is characterized in that the ball
Pipe is rotated with predetermined angular speed.
4. the Tomography device according to claim 3 for having focus shift compensation function, which is characterized in that the ball
Pipe velocity of rotation and the bulb support arm velocity of rotation are identical or essentially identical.
5. the Tomography device according to claim 2 or 3 for having focus shift compensation function, which is characterized in that institute
It states the control device control bulb to stop counter motion after end exposure and carry out returning movement, makes the bulb next
Secondary exposure is restored to the initial relative position with the bulb support arm before starting.
6. the Tomography device according to claim 1 for having focus shift compensation function, which is characterized in that described inclined
Moving device includes mobile platform and mobile control mechanism；
The mobile platform is set on the bulb linking arm, for carrying the bulb；
The mobile control mechanism connects the bulb, for moving the bulb on the mobile platform；
The control device, which controls the mobile control mechanism, moves the bulb on a mobile platform, makes the x-ray focus
In exposure process with described to be exposed object opposing stationary or substantially opposing stationary.
7. the Tomography device according to claim 6 for having focus shift compensation function, which is characterized in that the ball
Pipe moves at a predetermined velocity or starts to move with predetermined acceleration；And/or
The mobile platform is fixedly connected or is detachably connected with the bulb linking arm.
8. the Tomography device according to claim 6 or 7 for having focus shift compensation function, which is characterized in that institute
State control device control the bulb after end exposure stop motion and continue with the bulb support arm rotation direction phase
Same direction returning movement makes the bulb be restored to the initial phase pair with the bulb support arm before exposure next time starts
Position.
9. the Tomography device according to claim 8 for having focus shift compensation function, which is characterized in that described first
Beginning relative position refers to the relative position of the bulb and the bulb support arm when Tomography device exposes for the first time.
10. the Tomography device according to claim 1 for having focus shift compensation function, which is characterized in that described
Tomography device is that mammary X-ray body is laminated laminated at imaging device at imaging device or other physical feeling x-ray bodies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810458949.4A CN108836373B (en) | 2018-05-15 | 2018-05-15 | Body layer imaging device with focus displacement compensation function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810458949.4A CN108836373B (en) | 2018-05-15 | 2018-05-15 | Body layer imaging device with focus displacement compensation function |
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| CN108836373A true CN108836373A (en) | 2018-11-20 |
| CN108836373B CN108836373B (en) | 2021-09-24 |
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| CN201810458949.4A Active CN108836373B (en) | 2018-05-15 | 2018-05-15 | Body layer imaging device with focus displacement compensation function |
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| EP3797694A4 (en) * | 2018-05-23 | 2022-03-23 | Medi-Future, Inc. | Digital breast tomosynthesis device capable of controlling position of x-ray focus |
| WO2022109859A1 (en) * | 2020-11-25 | 2022-06-02 | 江苏康众数字医疗科技股份有限公司 | Tube having motion compensation function and radiographic imaging system having same |
| CN114869314A (en) * | 2022-07-11 | 2022-08-09 | 北京中研海康科技有限公司 | Mechanical arm type digital mammary machine |
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| Publication number | Publication date |
|---|---|
| CN108836373B (en) | 2021-09-24 |
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